ABSTRACT Our environment and its limited natural resources are growing concerns for all of us, not just in Nigeria but around the world. With this in mind, this project was undertaken to provide an environmentally friendly, cheap and highly suitable power source which will fit in with our immediate surroundings. Other forms of power generation were explained though without explaining in full detail. A thorough analysis of the method of osmotic power generation was explained with its advantages over other forms of power generation. Also, the types of materials used, the method of selection of materials, the steps in carrying out the actual design process and also the mode of operation of the plant were also highlighted. It is also indicated in the report that all the materials used in producing the plant, were made locally. With the design of this pressure retarded osmotic power plant, technology has once again proven itself to be a very important tool in making human life better.